The US will send Ukraine more advanced rocket systems to help it defend itself, President Biden has announced.
The weapons, long requested by Ukraine, are to help it strike enemy forces more precisely from a longer distance.
Until now, the US had refused the request out of fear the weapons could be used against targets in Russia.
Moscow said it viewed the latest US weapons package to Ukraine including the new systems "extremely negatively".
Separately, the German government has promised to send an air defence system to Ukraine.
Chancellor Olaf Scholz told MPs that the IRIS-T system was the most modern Germany possessed and would enable Ukraine to defend an entire city against Russian air attacks.
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